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1. [Amps] 2x LDMOS design tweaks (score: 1): Author: Jim Barber <barberaudio@gmail.com>; Date: Mon, 9 Sep 2019 16:28:11 -0700; Since it's quiet out, here's my latest amp mod project... There's actually a question in the last paragraph. :-) Some time ago I bought a dual-package MRFE6VP61K25HS LDMOS amp from a OM, originally b; /archives//html/Amps/2019-09/msg00006.html (8,468 bytes)
2. Re: [Amps] 2x LDMOS design tweaks (score: 1): Author: Greg Wasik <gwasik@gmail.com>; Date: Tue, 10 Sep 2019 08:59:25 -0400; Hi Jim, I noticed that another Jim (W6PQL) had originally used the "drain to gate" feedback in his earlier pallet design but went to a "gain shunt" approach. You might want to ping him but I also fou; /archives//html/Amps/2019-09/msg00009.html (10,251 bytes)
3. Re: [Amps] 2x LDMOS design tweaks (score: 1): Author: Jim Barber <barberaudio@gmail.com>; Date: Tue, 10 Sep 2019 11:27:11 -0700; Hi Mike, Yep, a 9:1 it is. I most certainly will look at your latest output designs, thanks. The 9:1 isn't bad, though... After 2 minutes key down @ 1200W output it only runs around 7-8C over ambient; /archives//html/Amps/2019-09/msg00012.html (11,052 bytes)
4. Re: [Amps] 2x LDMOS design tweaks (score: 1): Author: Greg Wasik <gwasik@gmail.com>; Date: Wed, 11 Sep 2019 10:35:14 -0400; Mike Yes, I have also seen newer designs are two stages of 4:1 cascaded to achieve 16:1 total. 4X4RB Baruch uses this approach, also N4GA www.n4ga.com Greg ___________________________________________; /archives//html/Amps/2019-09/msg00013.html (12,264 bytes)

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